Chemical Bonds

Flashcards about chemical bonds, ionic bonds, metallic bonds and covalent bonds.

What are chemical bonds?

Attractive forces that keep atoms together to form molecules or ions.

What are the three types of chemical bonds?

Ionic bonds, metallic bonds, and covalent bonds.

What is an ionic bond?

An electrostatic attraction formed as a result of transfer of electrons from one atom or group of atoms to another.

What type of elements bond to form ionic bonds?

Metals reacting with non-metals.

What ion does sodium form when it loses an electron?

A reactive sodium atom forms a sodium ion, Na+.

What ion does chlorine form when it gains an electron?

Chlorine atoms gain an electron to form chloride ions, Cl-.

How do valence electrons behave in metallic bonds?

Valence electrons in metals are shielded from the attractive forces of the positive nucleus by the inner electrons.

What do delocalized electrons in metallic bonds form?

A free-electron cloud.

What is metallic bonding?

The electrostatic forces holding the positive ions and the negative electron cloud together.

What is a covalent bond?

A bond formed by sharing electrons between non-metallic atoms.

Why do non-metallic atoms share valence electrons in covalent bonds?

To gain a stable octet/duplet configuration.